If you were trying to post a picture, detailed instructions for how to do that are in the New to Helpful Gardener section at the top of the index page, under Helpful Tips and Suggestions for New Members, along with other helpful stuff it would be good for you to read.

It looks like Adenium but, well, wow, um, I didn't think it was possible to kill Adeniumm through lack of care, but that looks to be exactly what whomever you purchased this tree from tried to do, and halfway succeeded. Other than standard cactus/succulent care, I can't offer much except to say that they need to be repotted better, and with more care.